Consider the following C statements:char *str1 = "Hello; /* Statement S1 */char *str2 = "Hello;"; /*

Q: What is GATE-CS?

GATE-CS is a competitive examination conducted in India. This question is from the 2026 GATE-CS Compiler Design paper.

Q: How can I prepare for GATE-CS Compiler Design?

To prepare for GATE-CS Compiler Design, practice previous year questions (PYQs), understand concepts thoroughly, and solve mock tests regularly. This 2026 question covers Lexical Analysis topic.

Q: What is the difficulty level of this question?

This GATE-CS 2026 Compiler Design question has a medium difficulty level and is marked as an important question.

Q: Where can I find more GATE-CS previous year questions?

You can find more GATE-CS previous year questions on AspirantMitraa. Browse by subject, topic, year, and difficulty level to practice effectively.

Question

Consider the following C statements:char *str1 = "Hello; /* Statement S1 */char *str2 = "Hello;"; /* Statement S2 */int *str3 = "Hello"; /* Statement S3 */Which of the following options is/are correct?

Accepted Answer

Correct Answer: (C)Concept -- Compiler Errors: Lexical, Syntactic, and Semantic: S1: char *str1 = "Hello; — The string literal is not terminated (missing closing double‑quote). The lexical analyzer scans the source code and identifies tokens; an unterminated string literal is a lexical error because the lexer cannot form a valid token. S2: char *str2 = "Hello;"; — This is perfectly valid. The string literal contains a semicolon as a character, which is allowed. No lexical or syntactic error. S3: int *str3 = "Hello"; — "Hello" is of type char* (pointer to char). Assigning a char* to an int* is a type mismatch. This is caught during semantic analysis (type checking) and is a semantic error. The code is lexically and syntactically correct (parsing would accept it). Thus S1 has a lexical error, S3 has a semantic error. Option C correctly identifies this.

Consider the following C statements:char str1 = "Hello; / Statement S1 /char str2 = "Hello;"; /* Statement S2 /int str3 = "Hello"; /* Statement S3 */Which of the following options is/are correct?

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Frequently Asked Questions

Consider the following C statements:char str1 = "Hello; / Statement S1 /char str2 = "Hello;"; /* Statement S2 /int str3 = "Hello"; /* Statement S3 */Which of the following options is/are correct?

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Frequently Asked Questions